WO2008093600A1 - Time synchronization system, time synchronization method, and program - Google Patents

Time synchronization system, time synchronization method, and program Download PDF

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Publication number
WO2008093600A1
WO2008093600A1 PCT/JP2008/051045 JP2008051045W WO2008093600A1 WO 2008093600 A1 WO2008093600 A1 WO 2008093600A1 JP 2008051045 W JP2008051045 W JP 2008051045W WO 2008093600 A1 WO2008093600 A1 WO 2008093600A1
Authority
WO
WIPO (PCT)
Prior art keywords
time synchronization
message transmitted
synchronization message
node
master node
Prior art date
Application number
PCT/JP2008/051045
Other languages
French (fr)
Japanese (ja)
Inventor
Hideo Yoshimi
Zhenlong Cui
Kazuo Takagi
Original Assignee
Nec Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nec Corporation filed Critical Nec Corporation
Publication of WO2008093600A1 publication Critical patent/WO2008093600A1/en

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G7/00—Synchronisation
    • G04G7/02—Synchronisation by radio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
    • H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Electric Clocks (AREA)

Abstract

[PROBLEMS] To realize an accurate time synchronization even if a delay time of a time synchronization message transmitted to a slave node from a master node is asymmetric against a delay time of a time synchronization message transmitted from the slave node to the master node. [MEANS FOR SOLVING PROBLEMS] Provided is a system including a jitter absorbing unit which corrects a time synchronization error caused by asymmetry between a queuing delay of a time synchronization message transmitted from a master node to a slave node and/or a throughput absorbing unit which corrects a time synchronization error caused by asymmetry between a transfer delay of the time synchronization message transmitted from the master node to the slave node and a transfer delay of the time synchronization message transmitted from the slave node to the master node.
PCT/JP2008/051045 2007-01-29 2008-01-25 Time synchronization system, time synchronization method, and program WO2008093600A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-018074 2007-01-29
JP2007018074 2007-01-29

Publications (1)

Publication Number Publication Date
WO2008093600A1 true WO2008093600A1 (en) 2008-08-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/051045 WO2008093600A1 (en) 2007-01-29 2008-01-25 Time synchronization system, time synchronization method, and program

Country Status (1)

Country Link
WO (1) WO2008093600A1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010212945A (en) * 2009-03-10 2010-09-24 Nec Corp Receiving-side node for clock synchronization, method thereof and program thereof
WO2010111963A1 (en) * 2009-04-02 2010-10-07 华为技术有限公司 Time synchronization device, method and system
JP2010278546A (en) * 2009-05-26 2010-12-09 Hitachi Ltd Time synchronization network and communication equipment
WO2010145410A1 (en) * 2009-06-19 2010-12-23 腾讯科技（深圳）有限公司 Method and device for synchronizing time of network games
JP2011135482A (en) * 2009-12-25 2011-07-07 Nec Corp Time synchronizing system, master node, slave node, repeater, time synchronizing method, and program for time synchronization
WO2011085585A1 (en) * 2010-07-23 2011-07-21 华为技术有限公司 Method and device for time synchronization
JP2013131934A (en) * 2011-12-21 2013-07-04 Nippon Telegr & Teleph Corp <Ntt> Speed conversion relay device
JP2013538022A (en) * 2010-09-20 2013-10-07 アルカテル−ルーセント Method for correcting delay asymmetry
JP2013251878A (en) * 2012-06-04 2013-12-12 Toshiba Corp Communication device, control device, and program
WO2013167026A3 (en) * 2012-11-23 2014-01-03 中兴通讯股份有限公司 Time synchronization apparatus and method for automatically detecting the asymmetry of an optical fiber
JP2014171028A (en) * 2013-03-01 2014-09-18 Nippon Telegraph & Telephone East Corp Time synchronization system, time synchronization method, slave node, and computer program
CN104079401A (en) * 2014-06-19 2014-10-01 南京航空航天大学 High-precision and short-period real-time communication procedure based on chain industry Ethernet
JP2015136178A (en) * 2015-03-26 2015-07-27 ▲ホア▼▲ウェイ▼技術有限公司 Method and system for implementing time synchronization
CN105278325A (en) * 2014-06-25 2016-01-27 阿自倍尔株式会社 Time synchronizing method, time connecting system, time master instrument, and time slave instrument
US9525541B2 (en) 2011-01-26 2016-12-20 Huawei Technologies Co., Ltd. Method and system for implementing time synchronization
CN106452641A (en) * 2015-08-04 2017-02-22 四川泰富地面北斗科技股份有限公司 Device for transmitting high-precision time signals through equal delay wavelength pairs and method thereof

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JPH04294654A (en) * 1991-03-22 1992-10-19 Nippon Telegr & Teleph Corp <Ntt> Cell delay fluctuation absorption circuit
JP2001111623A (en) * 1999-10-14 2001-04-20 Nippon Telegr & Teleph Corp <Ntt> Distributed time synchronization method and distributed time synchronization system utilizing this method
JP2006174001A (en) * 2004-12-15 2006-06-29 Nakamura Kazunori Clock synchronization scheme in data transmission and data transmission system
JP2007134873A (en) * 2005-11-09 2007-05-31 National Institute Of Information & Communication Technology Highly precise time synchronization processing apparatus and program thereof, and network congestion degree warning apparatus and program thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04294654A (en) * 1991-03-22 1992-10-19 Nippon Telegr & Teleph Corp <Ntt> Cell delay fluctuation absorption circuit
JP2001111623A (en) * 1999-10-14 2001-04-20 Nippon Telegr & Teleph Corp <Ntt> Distributed time synchronization method and distributed time synchronization system utilizing this method
JP2006174001A (en) * 2004-12-15 2006-06-29 Nakamura Kazunori Clock synchronization scheme in data transmission and data transmission system
JP2007134873A (en) * 2005-11-09 2007-05-31 National Institute Of Information & Communication Technology Highly precise time synchronization processing apparatus and program thereof, and network congestion degree warning apparatus and program thereof

Non-Patent Citations (2)

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Title
MACHIZAWA A. ET AL.: "CQ2005-73 Packet Tochaku Kankaku (PAI) ni Motozuita Jikoku Doki Hoshiki", IEICE TECHNICAL REPORT, vol. 105, no. 406, 10 November 2005 (2005-11-10), pages 35 - 40 *
MACHIZAWA A. ET AL.: "Maishobyo Packet Tochaku Kankaku (PAI) ni Motozuita Jikoku Doki Hoshiki", THE TRANSACTIONS OF THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, vol. J89-B, no. 10, 1 October 2006 (2006-10-01), pages 1855 - 1866 *

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010212945A (en) * 2009-03-10 2010-09-24 Nec Corp Receiving-side node for clock synchronization, method thereof and program thereof
WO2010111963A1 (en) * 2009-04-02 2010-10-07 华为技术有限公司 Time synchronization device, method and system
US8625641B2 (en) 2009-04-02 2014-01-07 Huawei Technologies Co., Ltd. Apparatus, method, and system for synchronizing time
JP2010278546A (en) * 2009-05-26 2010-12-09 Hitachi Ltd Time synchronization network and communication equipment
WO2010145410A1 (en) * 2009-06-19 2010-12-23 腾讯科技（深圳）有限公司 Method and device for synchronizing time of network games
JP2011135482A (en) * 2009-12-25 2011-07-07 Nec Corp Time synchronizing system, master node, slave node, repeater, time synchronizing method, and program for time synchronization
CN102439884A (en) * 2010-07-23 2012-05-02 华为技术有限公司 Method and device for time synchronization
EP2528254A1 (en) * 2010-07-23 2012-11-28 Huawei Technologies Co., Ltd. Method and device for time synchronization
EP2528254A4 (en) * 2010-07-23 2013-01-23 Huawei Tech Co Ltd Method and device for time synchronization
CN102439884B (en) * 2010-07-23 2013-03-20 华为技术有限公司 Method and device for time synchronization
US8817823B2 (en) 2010-07-23 2014-08-26 Huawei Technologies Co., Ltd. Method and device for time synchronization
WO2011085585A1 (en) * 2010-07-23 2011-07-21 华为技术有限公司 Method and device for time synchronization
JP2013538022A (en) * 2010-09-20 2013-10-07 アルカテル−ルーセント Method for correcting delay asymmetry
US9525541B2 (en) 2011-01-26 2016-12-20 Huawei Technologies Co., Ltd. Method and system for implementing time synchronization
JP2013131934A (en) * 2011-12-21 2013-07-04 Nippon Telegr & Teleph Corp <Ntt> Speed conversion relay device
JP2013251878A (en) * 2012-06-04 2013-12-12 Toshiba Corp Communication device, control device, and program
WO2013167026A3 (en) * 2012-11-23 2014-01-03 中兴通讯股份有限公司 Time synchronization apparatus and method for automatically detecting the asymmetry of an optical fiber
US9762318B2 (en) 2012-11-23 2017-09-12 Zte Corporation Time synchronization apparatus and method for automatically detecting the asymmetry of an optical fiber
JP2014171028A (en) * 2013-03-01 2014-09-18 Nippon Telegraph & Telephone East Corp Time synchronization system, time synchronization method, slave node, and computer program
CN104079401A (en) * 2014-06-19 2014-10-01 南京航空航天大学 High-precision and short-period real-time communication procedure based on chain industry Ethernet
CN104079401B (en) * 2014-06-19 2017-10-31 南京航空航天大学 A kind of short-period real-time communication system of high accuracy based on chain EPA network
CN105278325A (en) * 2014-06-25 2016-01-27 阿自倍尔株式会社 Time synchronizing method, time connecting system, time master instrument, and time slave instrument
JP2015136178A (en) * 2015-03-26 2015-07-27 ▲ホア▼▲ウェイ▼技術有限公司 Method and system for implementing time synchronization
CN106452641A (en) * 2015-08-04 2017-02-22 四川泰富地面北斗科技股份有限公司 Device for transmitting high-precision time signals through equal delay wavelength pairs and method thereof
CN106452641B (en) * 2015-08-04 2018-07-20 四川泰富地面北斗科技股份有限公司 It is a kind of using etc. time delays wavelength to transmit split-second precision signal device and method

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